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Probing the propeller regime with wide neutron star binaries
High Energy Astrophysical Phenomena · Submitted 1 Sep 2024
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Unless a propeller with a very slow spin-down is operating, it is very improbable to find a system similar to SWIFT J0850.8-4219 at the propeller stage.
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The abstract, sentence by sentence
We model the duration of the propeller stage in wide binary systems with neutron stars and calculate the time of accretion onset for various propeller models. We apply our modeling to the symbiotic X-ray binary SWIFT J0850.8-4219. Unless a propeller with a very slow spin-down is operating, it is very improbable to find a system similar to SWIFT J0850.8-4219 at the propeller stage. Then we model the evolution of a neutron star in a binary with a solar-like companion. We calculate for which orbital separations and magnetic fields a neutron star can start to accrete while the companion is still on the Main sequence. We demonstrate that for the magnetic field $B\lesssim10^{12}$~G neutron stars at the orbital separation $a\gtrsim 1$~AU do not reach the propeller stage. In the case of a slow propeller spin-down, neutron stars never start to accrete. For the more rapid propeller spin-down, a neutron star can start to accrete or spend a long time at the propeller stage depending on the parameters.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We model the duration of the propeller stage in wide binary systems with neutron stars and calculate the time of accretion onset for various propeller models. | contribution 0.76 | 0.95 | 0.05 | asserted 0.87 |
| s1 | We apply our modeling to the symbiotic X-ray binary SWIFT J0850.8-4219. | contribution 0.70 | 0.94 | 0.03 | asserted 0.96 |
| s2 | Unless a propeller with a very slow spin-down is operating, it is very improbable to find a system similar to SWIFT J0850.8-4219 at the propeller stage. | result 0.56 | 0.80 | 0.44 | hedged possibility 0.57 |
| s3 | Then we model the evolution of a neutron star in a binary with a solar-like companion. | contribution 0.59 | 0.92 | 0.03 | asserted 0.77 |
| s4 | We calculate for which orbital separations and magnetic fields a neutron star can start to accrete while the companion is still on the Main sequence. | method 0.53 | 0.93 | 0.07 | asserted 0.61 |
| s5 | We demonstrate that for the magnetic field $B\lesssim10^{12}$~G neutron stars at the orbital separation $a\gtrsim 1$~AU do not reach the propeller stage. | result 1.00 | 0.90 | 0.30 | asserted 1.00 |
| s6 | In the case of a slow propeller spin-down, neutron stars never start to accrete. | result 1.00 | 0.80 | 0.14 | asserted 1.00 |
| s7 | For the more rapid propeller spin-down, a neutron star can start to accrete or spend a long time at the propeller stage depending on the parameters. | result 0.98 | 0.87 | 0.20 | hedged possibility 0.82 |
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The paper
Original abstract
We model the duration of the propeller stage in wide binary systems with neutron stars and calculate the time of accretion onset for various propeller models. We apply our modeling to the symbiotic X-ray binary SWIFT J0850.8-4219. Unless a propeller with a very slow spin-down is operating, it is very improbable to find a system similar to SWIFT J0850.8-4219 at the propeller stage. Then we model the evolution of a neutron star in a binary with a solar-like companion. We calculate for which orbital separations and magnetic fields a neutron star can start to accrete while the companion is still on the Main sequence. We demonstrate that for the magnetic field $B\lesssim10^{12}$~G neutron stars at the orbital separation $a\gtrsim 1$~AU do not reach the propeller stage. In the case of a slow propeller spin-down, neutron stars never start to accrete. For the more rapid propeller spin-down, a neutron star can start to accrete or spend a long time at the propeller stage depending on the parameters.
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How the literature uses it
1 arXiv paper cite this in 4 sentences
Papers citing it · 2 sentences without a confident label
Builds on it 1 paper
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In the second paper [ref] we modeled the NS evolution in a wide binary with a solar-like companion in a circular orbit.
Evolution of neutron stars in wide eccentric low-mass binary systems · Introduction · 0.84
Compares with it 1 paper
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Contrary to the case of NSs with $B_0=10^12$ G in circular orbits considered by [ref] , the NSs with the same field but in eccentric orbits can switch to the propeller stage within the lifetime of their companions.
Evolution of neutron stars in wide eccentric low-mass binary systems · Summary and conclusions · 0.86
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